The Plantronics HW251N SupraPlus Monaural Noise Cancelling Headset is the latest in wideband VoIP technology that Plantronics has to offer, designed to work with wideband-enabled IP hardphones with its superior audio quality. Included PerSonoPro™ software ensures full integration with a wide range of enterprise-grade soft-phones, with its stylish lightweight design, ensuring comfort for all-day wearing and reliability, expanding on the classic corded professional headset; it features a greater receive-side audio quality vastly improving listening intelligibility. The Plantronics HW251N Supraplus also boosts its convenient Quick Disconnect feature which allows you to get away from your desk while still wearing your headset. The Plantronics HW251N SupraPlus headset supports all Plantronics amplifiers, and USB adapters. With this monaural option only covering one ear, it allows the user the flexibility to hear what is going on around them. This Superb quality noise cancelling headset is especially designed for call centres, busy working environments and office professionals.